Moore is close to both of the actors, as she is best friends with Kelly and dated Valderrama for a year when she was a teen. Now, the two are friends, and she revealed that she fully supports him in whatever he does.
"We're all close friends," E! News reports Moore as saying of the trio.
"It's not weird," she explained. "I love them both, and I've been friends with him for 15 years. We're like very, very close friends."
Moore shared that she dated Valderrama when she was 15, and the pair have stayed friends as they dated other people.
"He was my first boyfriend when I was 15," the actress said. "We can still be friends."
The pair proved just that when they ran into each other in July on the sets of NBC's This Is Us and CBS' NCIS, with Moore sharing the moment on Instagram.
"Sometimes you get to work on the same lot as your friends and you can run over, catch up and watch them continue to be a bada-- (in real life and on TV). Love this guy," she wrote. "Friends for over 16 years."